<template>
  <el-menu
    default-active="1-4-1"
    class="el-menu-vertical-demo"
    background-color="#545c64"
    text-color="#fff"
    active-text-color="#ffd04b"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
  >
    <h3>{{isCollapse ? '后台':'通用后台管理系统'}}</h3>
    <el-menu-item @click="clickmenu(item)" v-for="item in noChildren" :index="item.path" :key="item.path">
      <i :class="'el-icon-' + item.icon"></i>
      <span slot="title">{{item.label}}</span>
    </el-menu-item>
    <el-submenu v-for="item in hachChildren" :index="item.path" :key="item.path">
      <template slot="title">
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title">{{item.label}}</span>
      </template>
      <el-menu-item-group v-for="(subitem, index) in item.children" :key="subitem.path">
        <el-menu-item @click="clickmenu(subitem)" :index="index">{{subitem.label}}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<script>
export default {
  data() {
    return {
      menu: [],
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickmenu(item) {
        this.$router.push({
            name: item.name
        })
        this.$store.commit('selectMenu',item)
    }
  },
  computed: {
      noChildren() {
        return this.asyncMenu.filter(item => !item.children)
      },
      hachChildren() {
          return this.asyncMenu.filter(item => item.children)
      },
      isCollapse(){
        return this.$store.state.isCollapse
      },
      asyncMenu(){
        return this.$store.state.menu
      }
  }
};
</script>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu{
    height: 100%;
    border: none;
    h3{
        color: #fff;
        text-align: center;
        line-height: 3rem;
    }
}
</style>